Connectivity
Connectivity and managing Your Comcast Business network
Male IT Specialist Holds Laptop and Discusses Work with Female Server Technician. They're Standing in Data Center, Rack Server Cabinet is Open.
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Upstream speed extremely slow

I'm experiencing extremely slow upstream speed from my local server (using Comcast business class internet) to server in either Montreal, Canada or Terre Haute, Indiana. Upstream speed is only around 50KBps-70KBps. My upstream bandwidth supposed to be 7Mbps.

 

1. It connects to comcast business gateway directly

2. nothing else running behind gateway

 

Any ideas? 

 

Thanks,

Henry

 

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Visitor

Re: Upstream speed extremely slow

Additional information grap from comcast gateway

 

Upstream Channel

Upstream Frequency30098592 Hz18899069 Hz23698818 Hz36498299 Hz
Lock StatusLockedLockedLockedLocked
Modulation64QAM64QAM64QAM64QAM
Symbol Rate5120 KSym/sec2560 KSym/sec5120 KSym/sec5120 KSym/sec
Upstream Power45.7500 dBmV43.7500 dBmV45.0000 dBmV46.0000 dBmV
Channel ID1191012

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Re: Upstream speed extremely slow

2 tried two servers. one in Montreal, Canada, the other in Indiana, neither of them achieves more than 70kbps.

 

if I choose local server (San Jose) on speedtest.net, it only reaches 1.xMbps which is far below my tier (7Mbps). It get worse if I pick up a farther server.

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Visitor

Re: Upstream speed extremely slow

Additional information grap from comcast gateway

 

Upstream Channel

Upstream Frequency30098592 Hz18899069 Hz23698818 Hz36498299 Hz
Lock StatusLockedLockedLockedLocked
Modulation64QAM64QAM64QAM64QAM
Symbol Rate5120 KSym/sec2560 KSym/sec5120 KSym/sec5120 KSym/sec
Upstream Power45.7500 dBmV43.7500 dBmV45.0000 dBmV46.0000 dBmV
Channel ID1191012

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Re: Upstream speed extremely slow

Are you only seeing slow uploads to the specific servers mentioned? What do speedtest say? 

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Visitor

Re: Upstream speed extremely slow

2 tried two servers. one in Montreal, Canada, the other in Indiana, neither of them achieves more than 70kbps.

 

if I choose local server (San Jose) on speedtest.net, it only reaches 1.xMbps which is far below my tier (7Mbps). It get worse if I pick up a farther server.

View solution in original post

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